Protective glasses



FIG. 1 is a top plan view of protective glasses showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof; and

FIG. 5 is a side elevational view thereof, the side opposite that shown in FIG. 5 being the mirror image thereof. 

The ornamental design for protective glasses, as shown and described. 